If manually install only choose the driver path, 8168C advance options could not appear.

   This is because OS choose 8168B options for the 8168C device.

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   If you want install manually without auto installer, please install by 'Have Disk' and then choose 8168C.

  b. WIN + R and 'devmgmt.msc' to invoke 'Device Manager'
  c. double click the corresponding network adapter
  d. choose 'driver' property page
  e. click 'update driver...'
  f. click 'Let me pick from a list of device drivers on my computer...'
  h. click 'Have Disk...'
  g. choose 8168C , DO NOT choose 8168B
  h. install the driver

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   After installation, please ensure the device name is '8168C' , not '8168B'.

   The driver options are different between the two cards.